White French Dressing

I found this in the Miami Herald from Linda Cicero's Cook's Corner. This recipe looked a bit different than anything that I had found on Zaar. I haven't made it yet, but I'm posting it here so I don't lose it.

• Ready In: 5 mins
• Yields: 1 cup

Ingredients

• 1  cup mayonnaise, best quality
• 1⁄4 cup onion, finely grated
• 1  teaspoon Dijon mustard
• 1  tablespoon white vinegar or 1  tablespoon white wine vinegar
• 2  teaspoons white vinegar or 2  teaspoons white wine vinegar
• 1  tablespoon sugar (to taste)

Directions

1. Place mayonnaise in a bowl. Grate the onion on the grater disk of a food processor or the large holes of a box grater, and then mince finely by hand. Add to mayonnaise. Add mustard, vinegar and sugar and stir well. Cover and refrigerate overnight before using.